html,
body,
#app{
    margin: 0;
    padding: 0;
  background-color: #EFEFEF;
    height: 100vh;
    width: 100vw;
    box-sizing: border-box;
}

div{
    box-sizing: border-box;
}
.flex-row{
    display: flex;
    flex-direction: row;
}

.flex-column{
    display: flex;
    flex-direction: column;
}

.flex-center{
    justify-content: center;
    align-items: center;
}

.vertical-line{
    width: 3px;
    border-radius: 1.5px;
    background-color: #417dc9;
    margin: 2px 6px;
}